NEVER A BATTERY FOR PUSH BUTTON AND RECEIVER : When the button is pressed, it converts kinetic energy into an electrical signal to ring your wireless doorbells. So no more worrying your push button runs out of batteries and no more hassle in buying awkward weird batteries to run your push button.

Radio Operating Range: Operating range of over 500 feet. ensures you can hear the bell and answer the door or sign for the package in time.

HIGH PERFORMANCE TRANSMITTER: IP55 dustproof and waterproof rating; works between -4 °F to 140 °F; Can be used outdoors and withstand a variety of adverse weather conditions; CE, FCC, RoHS certification.

58 CHIMES TO CHOOSE FROM: There are 58 different ring tones with 4 levels of adjustable volume from 50db to 80db; Press one or the previous button to easily select 58 melodies.

EASY INSTALLATION: Aloici latest upgrade wireless doorbell is a transmitter self-powered doorbell, without any battery, just plug the receiver into an electrical outlet,the push button transmitter can be fixed to the front door with the provided screws,or stick it to the door with provided adhesive tapes